Caller ID shows all phone inquiries, and the phone is changed to the same number. Why not show phone fraud?

1, it may be that the mobile phone does not have the function of calling number display, so you need to contact the network operator to open it. Open the SMS on the mobile phone desktop, find the mobile phone operator number of your choice, then enter the corresponding service number, and select the function of opening the caller ID number according to the SMS prompt sent by the operator.

2. If the other party turns on number hiding, the number will not be displayed when the phone calls. Because some mobile communications have the function of opening number hiding, when the other party opens this function, the specific number will not be displayed on the receiver's phone.